Burner



Dec: 1, V R. L. HANNAH BURNER Filed Dec. 18 1924 @jgsi.

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WITNESS:

.t oertL. Hannah mvsu'ron ATTORNEY Patented Dec. 1, 1925. r r

i UNITED STATES ROBERT L.,I-IANNAH, 0F WAGS, TEXAS,

132331353303; 0F FTFTY-FIVE PER CENT TO LOVE! MIG-EL, Of? "WAGS, TEXAS.

BURNER.

Application filed December 18, 1924:.

To all whom it may concern:

Be it known that I, Ronmrr L. HANNAH, a citizen of the United States, residing at lVaco, in the county of lriicllennan and State of Texas,have invented new and useful Improvements .in Burners, of which the following is a specification.

This invention relates to liquid fuel burncrs of the character generally used in connection with steam boilers and the like, and has for one of its objects, the provision of a double spiral web which is utilized to center the oil tube within the steam tube, and cause the steam to pursue a circuitous course about the oil tube, with a view of heating the oil to a high degree prior to mixing the oil with the steam adjacent the burner tip.

Another object of the invention resides in the provision of a quick adjustment for the steam tube longitudinally of the oil tube, to vary the distance between the burner tip and the adjacent end of the oil tube for different pressures of oil or fuel as the occasion may require.

A further object of the invention resides in the arrangement of the inlet nipples for the oil and steam, these nipples being disposed at diametrically opposite points, so they can be utilized to support the burner in its entirety for pivotal movement, thus allowing the burner to be arranged at any desired angle with respect to the boiler.

The nature and advantages of the invention will be better understood when the following detailed description is read in connection with the accompanying drawing, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawing forming part of this application, like numerals of reference indi cate similar parts in the several views, and wherein lfiiguro 1 is a longitudinal sectional. view through the burner.

Figure 2 is a side view of the oil tube with the spiral web.

Figure 8 is a sectional view taken on line of Figure 1.

Referring to the drawing in detail, 10 indicates the body of the burner which is internally threaded at one end as at 11 to threadedly accommodate the adjacent end of the steam tube 12. Surrounding this tube is a packing gland 13 which is held against Serial No. 756,820.

the adjacent end of the body of the burner by means of a packing nut 11. Carried by the other end of this tube is a burner tip 15 preferably ofthe design shown in Figure 7 I 1, and it is to be understood that this tip may form an integral part of this tube as shown, or may be detachably associated therewith in any suitable manner. Arranged within the tube 12 is an oil tube 16, and in order to center this tube, the latter is provided with a double spiral web 17 which contacts the inner surface of the steam tube 12. 'The spiral web not only serves to center the oil tube in the manner stated, but causes the steam to pursue a circuitous course, and thus be confined within the tube 12, an appreciable time with a view of heating the oil or liquid fuel Within the tube 16 to a very high degree, before this fuel is mixed with the steam adjacent the burner tip 15. The body 10 is provided with a nipple 18 disposed in alignment with the tube 16, so that the latter can be conveniently cleaned from time to time, the nipple 18 being normally closed by a plug 19. It will be noted upon inspection of Figure 1 that the body portion is divided by webs or partitions 20 and 21, and that the oil or liquid fuel tube 16 is threaded in the partition 21. The body portion is 35 provided with an inlet nipple 22 for the steam, which of course communicates with the outer tube 12, and is further formed with an inlet nipple 28 for the liquid fuel which of course communicates with the fuel tube 16. These inlet nipples 22 and 23 respectively are diagrammatically opposed so that they may be utilized to support the burner in its entirety for pivotal movement, and thus allow the burner to be arranged at any desired angle or inclination with respect to the boiler.

The threads on the tube 12 in the adjacent end of the body 10 are quick opening threads consisting of four separate starting threads, so that the casing 12 can be Very quickly adjusted with relation to the fuel tube 16 when the occasion requires, this adjustment being accomplished through the instrumentality of a handle 2 1 projecting; from the tube 12. The outer tube 12 is adjusted for light or heavy fuel and also for different pressures of fuel. The oil valve not shown remains open, and the steam pressure from the boiler controls the flow of oil or liquid fuel entirely. The burner can be adjusted to hold any desiredpressure on the boiler without touching the oil regulating valve, thus saving fuel. If the load on the boiler is reduced causing the pressure to rise, the exhausted pressure Will partially retard the outflow of the fuel, and if the load is increased the fuel will flow more readily and create more heat to compensate for the extra load.

lVhile it is believed that from the foregoing description, the nature and advantages of the invention will be readily apparent, We desire to have it understood that We do not limit ourselves to What is herein shown and described, and that such changes may be resorted to when desired as fall Within the scope of What is claimed.

Having thus described the invention, We claim: 7

A burner of the character described comprising a body portion including diametrically opposed fuel and steam inlet nipples adapted to support the burner for pivotal movement, an internal web separating said nipples, a nipple projecting from the body portion and interiorly and exteriorly threaded, a steam conveying tube threaded within the last mentioned nipple, a packing nut surrounding said tube and threaded on said nipple, a burner tip carried by the outer end of said tube, an oil tube arranged centrally Within the steam tube and projecting beyond the inner end thereof for threaded association With said body portion above said Web and communieating With one of the first mentioned nipples, a spiral Web carried by said oil tube adjacent the other end thereof, an. additional nipple projecting from the body portion and disposed in axial alinement with said oil tube so that the latter can be conveniently cleaned from time to time, a removable plug normally closing the last mentioned nipple, and a handle carried by said steam tube, whereby the burner can be moved upon its pivots as described.

In testimony whereof I affix my signature.

ROBERT L. HANNAH. 

